Installation worked fine but took me hours because in the installation documentation there is a link to R community with download links to partition image files (IMG*.zip), but in the description adb sideload is used which requires OTA files (e*.zip). So I spent a lot of time to find out why I always get the error “invalid zip file format”… In the end I found the solution here.
Moreover I was confused by step 6 “Now reboot into recovery to verify the installation” of section “Installing a custom recovery” because there is no description how to do this.
Can you please fix these issues?